Feasibility of Using Di-Dodecyl-Di-Octyl Diglycolamide for Partitioning of Minor Actinides from Fast Reactor High-Level Liquid Waste

Autor:	M. P. Antony, P. R. Vasudeva Rao, K. A. Venkatesan, Jammu Ravi, T. G. Srinivasan
Rok vydání:	2014
Předmět:	Lanthanide Nuclear fission product Fission products Chemistry General Chemical Engineering Metal ions in aqueous solution Extraction (chemistry) General Chemistry Actinide Metal chemistry.chemical_compound Nitric acid visual_art visual_art.visual_art_medium Nuclear chemistry
Zdroj:	Solvent Extraction and Ion Exchange. 32:424-436
ISSN:	1532-2262 0736-6299
DOI:	10.1080/07366299.2013.866857
Popis:	The unsymmetrical diglycolamide, di-dodecyl-di-octyl diglycolamide (D3DODGA) is a modifier-free extractant proposed for partitioning of trivalent actinides from nitric acid medium. D3DODGA has been evaluated for the feasibility of using it in the absence of a phase modifier, for the partitioning of minor actinides from fast reactor high-level liquid waste (FR-HLLW). The extraction behavior of various metal ions present in the simulated FR-HLLW was studied in a solution of 0.1 M D3DODGA/n-dodecane from nitric acid medium. The distribution ratio of about 20 metal ions was measured as a function of concentration of nitric acid and other interfering ion. The extraction was found to be strongly dependent on the oxidation state of the metal ion. The extraction of Am(III) from 3–4 M nitric acid medium was quantitative in a single contact. However, it was accompanied by the quantitative extraction of fission products such as trivalent lanthanides (Ln(III)), Y(III), and Zr(IV). The extraction of Sr(II), Pd(II), an...
Databáze:	OpenAIRE
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